Zach Braff’s romance with former Roswell cutie Shiri Appelby has secretly been going on for three months, OK! has learned exclusively. And it has gotten so serious so fast, friends are already predicting that marriage is a real possibility. “They’ve been hanging out at each other’s houses, going out for romantic dinners, shopping and having a great time together,” a friend of Shiri’s tells OK! “They’re so together as a couple already, they even spent the recent Jewish holidays together.”

Braff, 32, and 28-year-old Appelby have also pleased their respective families with the match. “They’re just great together,” says the friend. “They are both into their careers, want to marry and have kids, and they both embrace Judaism so they are on the same page about a lot of things that are important.”

Zach stars as Dr. J. D. Dorian on the NBC series Scrubs while Shiri will soon be returning to the small screen in the USA Network series To Love and Die.